Cheap And Discounts GT2 Closed Loop Timing Belt Rubber 2GT 6mm516 518 520 522 524 526 528 530 532 534 536 538 540 542mm Synchronous 3D Printer Parts Wholesale. Buy Directly From Merchant SANBrother Global Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.